Question

(x+1)(2x+3)(x+4)(2x+7)=-1​

Answer 1

Step-by-step explanation:

(x+1)(2x+3)(x+4)(2x+7)=-1

(2x^2+3x+2x+3)(2x^2+7x+8x+28)=-1

(2x^2+5x+3)(2x^2+15x+28)=-1

4x^4+30x^3+56x^2+10x^3+75x^2+140x+6x^2+45x+84=-1

4x^4+30x^3+10x^3+56x^2+75x^2+6x^2+140x+45x+84=-1

4x^4+40x^3+137x^2+185x+84=-1

4x^4+40x^3+137x^2+185x+85=0